Hudson Mfg continues to expand their line of factory-built accessories for the H9. Earlier this week, they announced the pre-order sale of the H_RD slide (short for Hudson Red Dot Slide).The H_RD Slide is a variant of the standard H9 slide, and it is engineered to allow for the lowest possible mounting of red dot optics. The patent-pending plate mounting system makes it possible to use multiple optics with the H_RD. The hardened steel mounting plates fit over a robust pivot surface and rotate into dual dovetail joints cut into the slide. This system prevents forward and rearward motion, and you can be assured that the H_RD will keep your optic in place while shooting.Initially, Hudson is offering mounting plate options for the Trijicon RMR, Shield RMS, and Leupold DeltaPoint Pro, and all H_RD slides will arrive with an aluminum block-off plate. Other plates will be available as the market changes. The H_RD comes equipped with a suppressor height front sight, and all plates are built with an integrated suppressor height rear sight. Additionally, the H_RD features H9A front and rear slide serrations and comes complete with slide internals. Just drop in either your standard H9 barrel or the Hudson H9 Threaded Barrel sold separately.The MSRP of the H_RD is competitively priced at $747, but during the pre-order sale, we are offering a 9% discount toward the purchase of the H_RD. Furthermore, three customers who purchase a H_RD by August 6th, 2018 will be entered to win their choice of a free Trijicon RMR, Shield RMS, or Leupold DeltaPoint Pro.